Production of masses resembling rubber oil substitute



Patented "Feb. 14, 1933 UNITED STATES PATENT OFFICE MARTIN LUTHER, OF MANNHEIM, AND HANS HELLER, OF LUDWIGSHAFEN-ON-THE- RHINE, GERMANY, ASSIGNORS TO I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT, 03' FRANKFORT-ON-THE-MAIN, GERMANY, A CQRPORATION 0F GERMANY PRODUCTION OF MASSES RESEMBLING RUBBER OIL SUBSTITUTE N0 Drawing. Application filed June 28, 1929, Serial No. 378,938, and in Germany July 8,

The present invention relates to the production of masses resembling rubber 011 substitute.

We have found that products resembling rubber oil substitute are obtained by treating the mixture of esters prepared by esterit mg polyhydric alcohols, such as glycero or sorbitol, with the unsaturated atty acids, obtainable by splitting oil water from oxidation products of waxes, including araiiin waxes and like hydrocarbons or from t e mixture of acids se arated therefrom, for example, by distilling the said oxidation products, either by themselves or in admixture with esters or other unsaturated fatty acids, which term includes also esters of hydroxy fatty acids which latter acids can be converted into unsaturated acids by heating, with a sulphurizing agent, such as sulphur or substances containin' sulphur, such as sulphur monochloride an the like.

The temperatures applied during the treatment with the said sulphurizing agents depend on the nature and strength of the latter and on whether or not a diluent is employed. Thus, for example, when employing sulphur a temperature of u to 120 C. or even more may be applied, w ereas when employing a sulphur c loride a temperature above about 80 0. should not be exceeded. If a diluent be employed the reaction temperature should generally not exceed the boiling point of the diluent chosen, since otherwise costly pressure-tight apparatus are re uired, As stated above the reaction may a o be performed in the presence of an inert diluent, such as hydrocarbons or any derivatives thereof which are free from hydroxyl groups, such as petroleum fractions, carbon disulphide or carbon tetrachloride. This process furnishes particularly valuable products inasmuch as they are free from albuminous substances and the other impurities which are present in rubber oil substitute prepared, for example, from linseed oil or rape seed oil.

The products resembling rubber oil substitute obtained in accordance with the present invention may be employed alone or also in admixture with rubber oil substitutes ob- .are esterified with 2 The parts are by weight.

Example 20 parts of the mixture of unsaturated acid having a saponification value of 261 obtainable b distilling at atmosphere pressure the aci portion insoluble in petroleum ether of an oxidation product of parafin wax parts of glycerol, 10 parts of the ester so obtained being treated with 3 parts of sulphur monochloride in 10 parts of petroleum ether at about 60 Q. When the petroleum other is distilled ofi there remains a tenacious non-glutinous rubber-like mass having great elasticity Whatwe claim is:

1. The process for the roduction of masses resembling rubber oil substitute, which comprises heating a mixture of esters of polyhydric alcohols with unsaturated acids preparedby splitting off water from the mixture of acids resulting from the oxidation of or similar initial matewaxes, in the presence of a sulphurizing agent.

2. The process for the roduction of masses resemblingrubber oil su stitute, which comprises heating a mixture of esters of polyhydric alcohols with unsaturated acids prepared by splitting off water from the mixture of acids, resulting from the oxidation of w axes,-together with esters of other unsaturated fatty acids in the presence of a sulphurizing agent.

3. The process for the roduction of masses resembling rubber oil su stitute, which comprises heating a mixture of esters of polyhydric alcohols with unsaturated acids prepared by splitting ofi water from the mixture of acids resulting from the oxidation of waxes, in the presence of a sulphurizing agent and of an inert diluent.

4. The process for the production of masses resembling rubber oil substitute, which comprises heating a mixture of esters of polyydric alcohols with unsaturated acids prepared by splitting off water from the mixture of acids, resultin from the oxidation of waxes, together with esters of other unsaturated fatty acids in the presence of a sulphurizing agent and of an mert diluent.

5. As new articles of manufacture products resembling rubber oil substitute comprising a polymerized and sfulphurized mixture of esters of polyhydric alcohols with the unsaturated aclds prepared by s litteigfi oil water from the mixture of aci r ting from the oxidation ofwaxes.

In testimony whereof we have hereunto set remiss 

